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3 years ago

The graph shows a proportional relationship. Which equation matches the graph?

Mathematics

1 answer:

matrenka [14]3 years ago

7 0

Answer:

I think the answer is A: y = 1/2 x.

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Can anyone help me, I think we need to use desmos

Igoryamba

Answer:

2 B l x Pattinson f s rıhtım dese rüyamın merhaba canım 53 nasılsın nasılsın bir yöntem

5 0

2 years ago

A random sample of 146 recent donations at a certain blood bank reveals that 81 were type A blood. Does this suggest that the ac

Tju [1.3M]

Answer:

We reject H₀ the actual percentage of type A donations differs from 40%

Step-by-step explanation:

Sample information:

sample size n = 146

Type A x₁ = 81 and p₁ = 81 / 146 p₁ = 0,5547

then q₁ = 1 - p₁ q₁ = 1 - 0,5547 q₁ = 0,4453

We choose as significance level α = 5% α = 0,05 α /2 = 0,025

from z-table we find z (c) = 1,96

National % of the population ( μ = 40 % μ = 0,4 )

Test hypothesis

Null hypothesis H₀ p₁ = μ

Alternative Hypothesis Hₐ p₁ ≠ μ

The Alternative hypothesis indicates that the test is a two-tail test

z(s) = ( p₁ - μ )/ √ p₁*q₁ / n

z(s) = ( 0,5547 - 0,40 )/ √ 0,5547*0,4453 / 146

z(s) = 0,1547 / 0,041

z(s) = 3,77

Comparing z(s) and z(c)

z(s) > z(c)

z(s) is in the rejection region. We reject H₀. Sample does not give evidence to support that the actual percentage of type A donations is equal to the national population

6 0

2 years ago

Ned help please ASAP!!!!!

Lubov Fominskaja [6]

The answer would be a (not too sure) but it makes a little bit sense

4 0

2 years ago

Please help, I need this work done.

tekilochka [14]

Slope = (8 - 0)/(0 - 4) = -2
y intercept b = 8

y = mx + b where m = - 2 and b = 8
So equation y = -2x + 8

Answer
D. last one
y = -2x + 8

5 0

3 years ago

Y=x^2-6x+3 help write the vertex form of the equation

Artist 52 [7]

Answer:

$y=(x-3)^2-6$

Step-by-step explanation:

$y=x^2-6x+3$

This is written in the standard form of a quadratic function:

$y=ax^2+bx+c$

where:

ax² → quadratic term
bx → linear term
c → constant

You need to convert this to vertex form:

$y=a(x-h)^2+k$

where:

(h,k) → vertex

To find the vertex form, you need to find the vertex. For this, use the equation for axis of symmetry, since this line passes through the vertex:

$x=-\frac{b}{2a}$

Using your original equation, identify the a, b, and c terms:

$a=1\\\\b=-6\\\\c=3$

Insert the known values into the equation:

$x=-\frac{(-6)}{2(1)}$

Simplify. Two negatives make a positive:

$x=\frac{6}{2} =3$

X is equal to 3 (3,y). Insert the value of x into the standard form equation and solve for y:

$y=3^2-6(3)+3$

Simplify using PEMDAS:

$y=9-18+3\\\\y=-9+3\\\\y=-6$

The value of y is -6 (3,-6). Insert these values into the vertex form:

$(3_{h},-6_{k})\\\\y=a(x-3)^2+(-6)$

Insert the value of a and simplify:

$y=(x-3)^2-6$

:Done

6 0

3 years ago